Perhaps sell your springs and look into the Bilstein B12 kit. I have driven on B8 shocks with my BMWPS springs and I could feel what the shocks were about (very nice Monotube damping, but realized my springs were too stiff for them). If they are matched with the correct Eibachs in the B12 kit I'm hearing its a great setup. I think the whole kit can be had for $830ish.....checkout D Bimmer recent thread....